Dynamic Rendezvous Channel Setup in Distributed Cognitive Radio Ad-hoc Networks

نویسندگان

  • Haile B. Weldu
  • Bosung Kim
  • Byeong-hee Roh
چکیده

In this paper, we propose a solution to the problem on how cognitive radios can find each other. The easiest and common practice to address this problem is to have a dedicated control channel on which the nodes can rendezvous with each other. However, a dedicated Common Control Channel (CCC) has severe drawbacks. As a solution to this drawback, we propose a rendezvous channel (RC) setup scheme called Dynamic Rendezvous Channel Setup in Distributed Cognitive Radio Networks (DyRCS). In DyRCS, one of the free channels is chosen as RC rather than having dedicated CCC. Besides, instead of deploying a dedicated central entity, one of the nodes from the Secondary Users (SUs) is in charge of transmitting the RC. Extensive MATLAB simulations were performed to study the effectiveness of DyRCS.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Life Cycle of the Rendezvous Problem of Cognitive Radio Ad Hoc Networks: A Survey

In cognitive radio or dynamic spectrum access networks, a rendezvous represents meeting two or more users on a common channel, and negotiating to establish data communication. The rendezvous problem is one of the most challenging tasks in cognitive radio ad hoc networks. Generally, this problem is simplified by using two well-known mechanisms: the first uses a predefined common control channel,...

متن کامل

Quorum system and random based asynchronous rendezvous protocol for cognitive radio ad hoc networks

This paper proposes a rendezvous protocol for cognitive radio ad hoc networks, RAC2E-gQS, which utilizes (1) the asynchronous and randomness properties of the RAC2E protocol, and (2) channel mapping protocol, based on a grid Quorum System (gQS), and taking into account channel heterogeneity and asymmetric channel views. We show that the combination of the RAC2E protocol with the grid-quorum bas...

متن کامل

Ring-Walk Rendezvous Algorithms for Cognitive Radio Networks

Rendezvous in cognitive radio networks is the process that cognitive users meet and establish a communication link on a commonly available channel, so that consequent information exchange and data communications can be accomplished on the channel. In this study, we propose two ring-walk (RW) rendezvous algorithms to solve the problem of blind rendezvous, i.e., rendezvous without the help of any...

متن کامل

Common control channel design for cognitive radio wireless ad hoc networks using adaptive frequency hopping

1570-8705/$ see front matter 2009 Elsevier B.V doi:10.1016/j.adhoc.2009.10.004 * Corresponding author. Tel.: +1 404 510 9089. E-mail addresses: [email protected] (C. Corm (K.R. Chowdhury). Cognitive radio (CR) technology enables the opportunistic use of the portions of the licensed spectrum by the CR users, while ensuring low interference to the primary user (PU) activity in the licensed bands...

متن کامل

A Hybrid MAC Protocol for Cognitive Radio Ad Hoc Networks

In cognitive radio networks, secondary users exchange control information to utilize the available channels efficiently, to maintain connectivity, to negotiate for data communication such as sender-receiver handshakes, for neighbor discovery etc. This task is not trivial in cognitive radio networks due to the dynamic nature of network environment. Generally, this problem is tackled by using two...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013